death pit

noun5

1. •
   A concealed hole in the ground designed to kill, trap, or severely injure a target.
2. •
   A natural trap where ancient animals became mired and died en masse, resulting in dense, highly concentrated fossil deposits.
3. •
   (figurative) Any scenario, environment, or system that guarantees failure, ruin, or destruction.
4. •
   A plague pit.
5. •
   Synonym of bottomless pit.